Razor motor casing



Feb. 7, 1950 P. c. NEILSENv 2,496,744

RAZOR MOTOR CASING Filed Dec. 14, 1946 Patented Feb. 7, 195o 'e`2,496,744

f UNITED STATES f' 2 496344@ f; e. f

yim zoiiivio'roR o-s'iNG Peter c. Neiisei'i chicago, in. 'ApplicationDecember 14, 194s, serialize. 716,250 1 soiaims. 4(ci. 17g-126i Thepresent invention relatesto an electric 'gthe rater, theview being'takenon the line 3--3 razor of the type commonly known as a wet razor of Fig.1;

` 4 Jis a transverse sectional view through wherein the razor head is ofthe safety razor type.l Fig. The razor casing accoinriiodatesr a `motorthat the razor. the view'being taken on the line 4--4 actuates the headcausing vibration thereof. rThe 5 1 ofFig. `v1'; v and user of such arazor first softens his beard with Fig. 5 isa' lngitudinalsectionalview,l the view Warm water and shaving soap or cream and then being'takn'on the line" 5-5 of 'Fi'g. 1. the vibrating head of the razor isbrought in con- For purposes of illustration a single emboditact withthe users face and the beard is rern'ent'of'the presei'itinvention hasbeen selected, moved in a manner similar toy that employed mail?being'eCOghZ'dhQWeVithat m21hy`m0difl`- with a conventional safetyrazor.The vibration cations may be 'made inithe embodiment shown of the headprovides a cutting action that greatly withoutdepartingfrom the intendedscope of the increases the eiiiciency of `this type of razor overinvention. i that of the conventional safety razor. Referring to thedrawings the invention is One object of the present invention is to pro-15ill'ustrated in the lform ofa razor generally individe such anelectric razor wherein the motor is vcated at lvthat comprises a-casinggenerally infirmly held in the casing insuch a manner that dicated vatil and a head generally indicatedr at water is prevented from enteringthe casing and l2".l A"The casing I l'g-comprisesy a cylindricalporcoming in contact with the motor parts. At the tOn I3 that tapers asat |4- -The Opposite end same time there is a complete elimination of 2fof 4rthe casing Il isopen'and is` provided with a screws and the likepenetrating the casing. In flange portion 15 thatabuts against ashoulder prior razors of this type themotor lis held in the" l5' ChemyBhd Cap 'I1 that' GlOSeS the Open end 0f casing by means of screwsl thatypass through the casing ll. i i the casing and the exposed heads ofthese screws Mounted in the Casing ll .is a mOtOl generally are constantsources of difficulty, both in allowing I" 25 indicated at I3. Thismotor lfnllldes a mitg-y water to pass through the casing and coming innetic core member-19 4thatis substantially inA contact with the motorparts, and further these the shape ..0f .an E that inCludes a Pall' 0fscrew heads provide constant sources of electric spaced arms 20 andr 2land a Central amz. shock to the user of the razor. In addition to thisDisposed .about thezcehtlal arm 22 is ah electr()-`r difficuity users ofprior electric razors ci this ai meeneticol thetis adeptedto beconnected type are constantly subjected to electric shock to` asouree 0ielectrical current by means of when the head of the razor comes incontact'with Wes 24 and 25 that pass through an aperture 2 6 in the end;cap l1 As shownin Fig. 24 the` the users face. This is due to the factthat in prior razors water is allowed to seep through Core I9 may bemadQP-.Ppof a plurahl'YIOf 19ml" hated, plates jim.v

the casing from the head thereof so as to cause r9,5 f i; :kk v

1 An armature/211s provided atene end with an a short in the electriccircuit, thereby charging o rip-turn d portion 2 8.As shown in Fig. 2 apair' the razor head with an electric charge. This ofarrns 29 and 3 0are Welded to the 'up-turned diiiiculty is completely eliminated in therazor forming the subject matter of the present invenp0rno 23 0f theafmal'ule 27 S0 as to form m tion by an effective grommet at the headend 4u effect membm @halfl adapted tostraddle of the razon f one end ofthe core l9.. A rivet 3| passes through The present invention provides asturdy razor e ms zand au fg um member ld through cf the type describedwherein vibration of the 9 @mma es Cori. 5; is o Secure ec mem' casingitself is reduced to a minimum. ber and the arma ure 1 to the Core '9 Apair, Further objects and advantages of the inven 45 of Stpacecmaclmerzscrewstz pass hrOug-:l the upurne por ion B'of re arma rure 2and lgsrilor?elhpgr clouowmg. are forced against the end ofthe'core I9so 5 f as to make the up-turned portion 230i the arma- Fig. 1 is alongitudinal sectional view through tr-e121 frgidwitk rspf, to the coreA"L The the razor. the heed 0f the razor heme Shown 50 opposite end ofthe armature 21 is provided with mostly in elevation; an up-turnedportion 33 that is apertured at 34 Fig. 2 is a longitudinal verticalsectional view to receive a, stud end 35 of a post 3E. The post takenthrough the razor ShOWIl in Fig. 1, the head 36 is electricallyinsulated from the armature 21 on indicated at 31. The stud 36 isthreaded to receive a of the razor being shown in elevation; by means ofinsulati Fig. 3 is a transverse sectional view through 55 end 35 of thepost nut 38. The free end of the post 36 is provided with a flange 39 towhich is secured the razor head I2 that may be of any conventional type.For purposes of illustration the head I2 is shown as comprising a razorblade supporting member 40, a razor blade 4I and a blade hold-downmember 42. Thus head I2 may be threaded into the post 36 as indicated at43.

Surrounding the. post 36 is agrommet 44. made of rubber or somesuch.suitable; material that is adapted to seal the opening in the head endof the casing II. a lower sealing skirt portion 45 that is adapted torest against the inner face of the tapered?y portion I 4 of the casingII. Adjacent tothislower skirt like portion 45 is a ilared portion 46that is provided with a shoulder 41' thatrengagesithe;

end of the tapered portion I4 of the casing I I. The outer extremity ofthe shoulder 41 conforms with `the outer peripheralsurfaceof the taperedportion I4 of casing II.

provided .on the inner` side of the flang'ey49. Thus the grommet 44provides an effective seal so as to prevent passage of Water` fromtheheadend of the razor into the interior of the casing I I.

As shown in Figs. 3.l 4 and. 5 the casing II is provided with arectangulargroove49 along the top inner surfacethereof and. this grooverextends substantially the full. length of. the casing. and correspondsin width with the vWidth of.the. core I9 of the motor. Thus the core I9is adaptedtot..

into the rectangular. groove, 49: of the casing as indicated in Figs. 3and` 4.- and thus be held.

against lateral movement inthe casing, Adjacent to the bottom of.the..core Isare apair of spring like casing engaging.V members, 50 and5I secured respectively to arms-20 and.2| offthefcore The engagingmember. 50;' isa substantially. U-shape as indicatedin. Fig. Biandissecured toA 54 and 55 (Fig. 3)' are provided alongthelower inner faceof thelcasingII at least in thefforward part of the casing, andy these;guidestrips arespaced to conform with the width ofthecasing engagementmember-50 so as to guidethecasing engagement member' 5 D and hold'thelowerend of the core I9' againstlateral movement irr the casing.

The end cap I1 is provided with a pluglike` portion 56 thatis adapted toenter the. casing II and an upstanding projecting portion 51 is providedalong the upper edge ofthisplug like portion 56, this upstanding portionbeingadapted to nt snugly in the groove 49.

Thus is provided a .razorV of the; type described. that has a casingentirely` free. of. penetratingr screws and the like. Themotor I8. is.retained.

This grommet 44 is provided with`V The outerend" oi" the grommet 44abuts against the shoulder 48A thatis A Ix rigidly in the casing throughthe armature 21 is free to vibrate up and down about its rear rigidconnection to the core I9. This vibration is caused by the alternatechanging of the polarity of the free end of arm 20 on the core I9. Thisaction results from the change of eld direction induced by the operationof the electromagnetic coil 23 in response to an alternating current.This vibrating movement of the armature 21 is in effect a very rapidbackward and forward movement in one plane in a lateral directionparallel to the edge of the razor blade 4 I.

I claim:

1. A razor of the class described comprising anelongated casing havingan open end, a motor in the casing adapted to slide through the open endof"A the casing, andV means holding the motor xed in the casing withoutpenetrating through the Walls of the casing including a groove in theinner face of the casing, means on the motor adapted to t in the groove,and casing engaging means on the opposite side of and fixed tothe motorandslidabiy engaging the inner face of the casing so as to hold themotor in fixed positionr in the casing.

2. A razor of the class described comprising an elongated casinghavingan elongated inner chamber of substantially circularv crosssection, thecasing having-an open end, a longitudinal groove in the wall of thechamber, a motorin the casing adapted to slide through the open end ofthe casing and having a longitudinal projecting portion adaptedy toproject into the groove..

and an arcuate engaging member on the motor on the side opposite theprojecting portion adapted to engage the wall' of the chamber.

3. A razor of the class described comprising an elongated casing havingan elongated innerchamber ofv substantially circular cross section, thecasing having one end open and the-other end provided with a hollowelongated boss-like portion, a longitudinal groove in the wall of thechamber extending from the open end, a motor in the casing adapted toslide through the open end of the; casing andhaving a longitudinalprojecting portion adapted to project into the groove, one end of themotor being provided with an elongated shaft that is adapted to projectthrough the boss-like portion and on its free end toreceive a razorhead. and an arcuate engaging member on the motor on the side oppositethe projecting portion adapted to engage the wall of the chamber.

PETER C. NEILSEN.

REFERENCES. CITED The following references are of recovdiir the le ofthis patent:

UNITED STATES4 PATENTS" Number Name Datel 2,083,405 Schick June 8, 19372,186,786. Jensen. Jan. 9, 1940 2,241,073 staar May e, 1943 2,365,649Shaw Dec. 19, 1944 2,396,397 TOlmie Mar. l2, 1946

